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Duramax First Generation: 2001-2004 (LB7) Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 12-31-2007, 05:44 PM   #1 (permalink)
002tallymax
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code u1000 ?

help,
today i got my truck to fire off.but it was popping alot. with the scan tool i lowered my fuel pressure to 20 psi. and it didn't sound good, so i shut it down. i removed the edge and it still wont start. scan tool gives me a code u1000. what cha think. help a brother out!!!!!!!!!!!!
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Old 12-31-2007, 05:54 PM   #2 (permalink)
sparky1562
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Code:U1000Modules:Audio Amplifier, BCM, DDM, DRR, DSM, EBCM, ECM/PCM, GBCM, HVAC Control Module, IPC, PDM, Radio, RWSCDescription:Class 2 Data Link Malfunction

There is a DTC lookup sticky at the top of the forum. Sounds like a harness problem to me.
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Old 12-31-2007, 09:47 PM   #3 (permalink)
002tallymax
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Quote:
Originally Posted by sparky1562 View Post
Code:U1000Modules:Audio Amplifier, BCM, DDM, DRR, DSM, EBCM, ECM/PCM, GBCM, HVAC Control Module, IPC, PDM, Radio, RWSCDescription:Class 2 Data Link Malfunction

There is a DTC lookup sticky at the top of the forum. Sounds like a harness problem to me.
thanks sparky,
which of these would cause it not to start. keep in mind, all was fine then it just died. i know to check the ecm but are any others vital to a start or idle.
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Old 01-01-2008, 10:35 AM   #4 (permalink)
sparky1562
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I don't know, but maybe these were set when you removed the edge? I think that code shows a total failure in communications, which would have happened when you removed it. (I have never messed with the harness so I base that on what I have read.) Make sure you got the harness back together, did not bend any pins, etc.

I lot of people would proably say disconnect the batteries for 12 hours or so and see if everything resests.

Hopefully some of guys with Edge problems will chime in.
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2003 GMC 2500HD Crew 4WD 117 K miles
4" Turbo Back Magnaflow
MKW M26 Wheels BFG 265/70R-17/E
Fold-a-cover, trailer brakes, B&W Turn Over Ball
New Injectors at 83,670, ISSPRO Pyro and Boost Pillar mount. PPE Boost Valve. PPE Excellerator.
Cognito pitman and ilder arm brace. Bilstein Shocks at 100K.
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Old 01-01-2008, 10:46 AM   #5 (permalink)
002tallymax
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yep, i got that code before and after i removed the box.i'll try the batteries
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